Safety razor blade



Jan. 5; 1932. E, R HOFF 1 ,840,199

SAFETY RAZOR BLADE Filed May 7, 1930 INVENTOR WITNESSES I Edwarclfi. ig ff BY W,

. I ATTORNEYS Patented Jan. 5, 1932 UNITEDISTATES PATENT OFFICE EDWARD R. HOFF, F RICHMOND, NEW YORK, ASSIGNOR OF ON'E-BLALF TO FRANK O. SCHELLENIBERG, 0F BROOKLYN, NEW YORK SAFETY RAZOR BLADE Application filed May 7, 1930. Serial No. 450,507.

This invention relates to safety razor blades and has for an object to provide an improved construction wherein a plurality of narrow double edged blades may be used in a. group in such a way as to present in efiect an ordinary double edged blade such as now in .use when the parts are functioning.

Another object of the invention is to prooutline and size of the usual commercial blade now on the market, but formed with a plurality of rotatable double edged blades arranged so that four edges may be utilized before the complete blade is discarded.

1:. A further object, more specifically, is to provide a safety razor blade having a body of the size and contour of commercial razor blades now on the market, and cutting members pivotall mounted on the body formed :1 with means or locking them in different positions, the structure being such that each cutting member may be rotated to present two cutting edges. a

In the accompanying drawings- Figure 1 is a plan view of a razor blade disclosing an embodiment of the invention;

Figure 2 is a rear view of. the blade shown in Figure 1;

Figure 3 is a sectional view through Figure 1 on line 3+3, the same being on a large scale;

Figure 4 is a transverse sectional view through Figure 1 on the line 4-4, the same being on a slightly enlarged scale;

- Figure 5 is a top lan view of the razor blade body shown in igure 1;

Figure 6 is a plan view of one of the cut: ting members shown in Figure 1.

Referring to the accompanying drawings by numerals, 1 indicates the body of the blade, and 2 and 3 the cutting members. The body 1 may be made from celluloid, fibre, metal or other material as desired. The blades 2 and 3, of course, are made of high grade steel and as shown in Figure 1 are about one-third as wide as body 1, although a the exact width ma vary withoutdeparting from the spirit of t e invention.

It will be noted that each ofthe cutting members 2 and 3 are provided with two edges,

namely 4 and 5. The body 1 is shown as being formed with three apertures to fit a certain type holder now on the'market, but it will be evident that these apertures may be varied as desired whereby the blade may fit '55 any desired holder.

In forming the body 1 apertures 6 and 7 p are formed therein on. a central line, while vide a safety razor blade having the general pressed-up portions or locking bosses 8, 9, 10 and 11 are provided near each end of the body. so The blades 2 and 3 are identical and, as illustrated in Figure 6, the blade 2 is formed with a central aperture 12 and what may be termed end apertures 13 and 14. The central aperture 12 is adapted to receive the retaining and pivotal rivet 15. This rivet as shown in the drawings is in the form of an eyelet for the purpose of lightness although a solid As shown in Figure 3, blade 3 accommodates the bosses 9 and 10 in a similar way to blade 2, said blade 3 being held in place by eyelet 15.

. When the parts are in the position shown in Figure 1, the bladeis ready for use and may so be clamped into a holder in the usual manner. When this is done the edge 4: of blade 2, for instance, is exposed and acts as the cutting edge at that time. The blade 2 and also blade 3 are adapted to swing and consequently are notabsolutely rigid when the blade is free, as shown in the drawings, but when clamped in a holder blade 2 and blade 3 will be held rigid and consequently the cutting edges will function properly.

When ed e 4, for instance, becomes dull the blade may e removed from the holder and reversed so that edge 4 of blade 3 is in position for use. When this blade has become dull both cutting members are rotated until the opposite edge, namel edges 5, are outermost. The blade may then e ap liedto the holder in the usual manner. A ter all four ed es have been used the blade must be discar ed and a new one substituted. if;

It will be noted that by reason of the fact that the cutting members 2 and 3 are very narrow and that they do not flex appreciably they may be made of extra hard steel, and

' 5 consequently will not only present four cutting edges but will present four cutting edges which will retain their sharpnessfor a longer time.

Many safety blades must be flexedjtto b e b clamped into a holder and are therefore unsatisfactory because they cannot be tempered hard enough to hold an edge an appreciable... time. In the cutters 2 and '3 this dilficulty is. not present and consequently these cutting members may be hardened so that their cutting edges will be highly eflicient and will retain their sharpness after appreciable use.

Icl'aim' i a v 1. A razor blade having a plurality of blade units pivotallysecured together, each bliade unit being provided with two cutting T. e ges,

2. A safety razor blade comprising a flexible body, and a double edged cutting member, means for rotatably securing said'cutte'r member to said body adjacent an edge, so that eithercutting edge thereof may be exposed, said cutting edges when exposed extending beyond the edge of said body.

3. A safety razor blade comprising a flexible body, a pair'of 'double edged cuttingmembers, and pivotal connecting members for pivotally connecting each' of said cutting members to 'said'body so thatwhen in either' 5 of two positions the respective cutting mem bei's will have one edge projecting beyond the edge of the-body.

4'. 'A razor comprising a flexible body, a pair of double edged cutting members, rivets '49 arranged centrally of each cutting memberj the rivets extending through the cutting? members and th'rou 'h'the body so that part ofthe cutting mem ers will project beyond one edge of the body, each ofpsaid cutting 4 "members having apertures therein spaced from said rivets, and'means extending from said cbody into said apertures for yieldingly locking the cutting members against independent m ovement. Y 5. A safety razor, blade provided with a flexible body, a pair of double edged cutting members, means for permanently and rotatably mounting said cutting members on the body so that they may be movedjto expose either edge, and means for temporarily look ing each cutting member with an edge exposed. r a w Signed at New York city in the county of New York and State of New York this 6th 5 day of.May', A. D. 1930.

EDWARD R. HOFF. I 

